digital Unix and DATs

From: Andreas Grzybowski <grzybows_at_transtec.de>
Date: Tue, 21 Apr 1998 13:12:40 +0200 (MET DST)

Hello Managers !

Here is the summary - a big thanks to the following:

Claude SOMA - CNTS <soma_c_at_decus.fr>
Knut Hellebø <Knut.Hellebo_at_nho.hydro.com>
Alan Davis <Alan.Davis_at_digital.com>
Stefan Albert <Albert_at_staedtler.de>
Thomas Leitner <tom_at_finwds01.tu-graz.ac.at> "it works :-))"

The general summary:

If you write to /dev/rmt<SCSI-ID>h you use the compressing device.
Also you must to put a separate entry in /etc/ddr.dbase to get a proper
config for dat drives (see 'man ddr_config')


The special summary:

/etc/ddr.dbase entrys

Locate the Database entry for the DEC TLZ07 DAT-Drive
Copy this entry and paste it later in the file.

SCSIDEVICE
    #
    Type = tape
    Name = "HP " "enter here <modell>"
    #
    PARAMETERS:
        TypeSubClass = rdat
        TagQueueDepth = 0
        MaxTransferSize = 0x0ffffff
        ReadyTimeSeconds = 60
    DENSITY:
        #
        DensityNumber = 0,3,4,5,6,7
        DensityCode = default
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        #
        DensityNumber = 1,2
        DensityCode = default
        CompressionCode = 0x1
        Buffered = 0x1

or:

SCSIDEVICE
    #
    Type = tape
    Name = "HP " "C1533A"
    #
    PARAMETERS:
        MaxTransferSize = 0xffffff
        DisperseQueue = false
        TagQueueDepth = 0x0
        ReadyTimeSeconds = 0x2d
        InquiryLength = 0x2b
    DENSITY:
        DensityNumber = 0
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        DensityNumber = 1
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x1
        Buffered = 0x1
    DENSITY:
        DensityNumber = 2
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x1
        Buffered = 0x1
    DENSITY:
        DensityNumber = 3
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        DensityNumber = 4
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        DensityNumber = 5
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        DensityNumber = 6
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1
    DENSITY:
        DensityNumber = 7
        OneFilemarkOnClose = no
        DensityCode = 0x13
        Blocking = 0
        CompressionCode = 0x0
        Buffered = 0x1


All the best and have a nice day,

Andreas Grzybowski
Received on Tue Apr 21 1998 - 13:15:53 NZST